lee scratchy wrote:
well you can't do a 3x3 matrix with three 1D LUTs, can you ?
No, but what's that got to do with what they said ?
Film density -> Three 1-D LUTs -> 3x3 Matrix -> Scene XYZ This Curve-and-Matrix model can be inverted exactly for converting
Yes, this is quite true, and happens all the time in dealing with ICC shaper+matrix profiles. Graeme Gill.
